# Symbol List Request <x>

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A [Symbol List Request `<x>`](https://www.onixs.biz/fix-dictionary/4.4/msgType_x_120.html) returns a [Symbol List `<y>`](https://www.onixs.biz/fix-dictionary/4.4/msgType_y_121.html) response containing the symbols traded on the exchange.

See [Examples: Request for the symbol list](/trading/fix/market-data/examples/request-for-symbol-list) for sample requests and responses.

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### Fields

| Tag | Name                                                                                | Req | Description                                                                     |
| --- | ----------------------------------------------------------------------------------- | --- | ------------------------------------------------------------------------------- |
|     | [Standard Header](/trading/fix/overview/standard-header)                                    | Y   | [MsgType](https://www.onixs.biz/fix-dictionary/4.4/msgs_by_msg_type.html) = `x` |
| 320 | [SecurityReqID](https://www.onixs.biz/fix-dictionary/4.4/tagNum_320.html)           | Y   | Unique identifier of this request.                                              |
| 559 | [SecurityListRequestType](https://www.onixs.biz/fix-dictionary/4.4/tagNum_559.html) | Y   | The type/criteria of the request.                                               |
|     | [Standard Trailer](/trading/fix/overview/standard-trailer)                                  | Y   | Valid value:<br/>`0 = Symbol`                                                   |